@charset "UTF-8";
 table{
            border-collapse: collapse;
            margin-top:50px;
            position:absolute;
            left:33%;
            
        }
        table tr td{
            width: 120px;
            height: 30px;
            text-align: center;
        }
        table tr th{
            width: 120px;
            height: 30px;
            text-align: center;
        }
        .level{
            height: 50px;
            background-color: rgb(224,224,224);
        }
        .tr1{
            height: 60px;
        }
        .computer{
            height: 60px;
            background-color: rgb(224,224,224);
        }
        .grey{
            background-color: rgb(224,224,224);
        }
        .tr2{
            height: 60px;
        }
        .tr3{
            height: 100px;
        }